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Abstract
The Blue Brain Project is an attempt to reverse-engineer and model the neocortical
column, to explore how it functions and to serve as a tool for neuroscientists and
medical researchers. In order to achieve the goal of automatically fitting models
to the latest data from clearly defined sources, a series of calibration steps have
been developed. Each calibration step includes a physiological database, analysis
technique and comparison to model data. All data is scored for completeness and quality.
The aspects of the neocortical model for which calibration steps have been implemented
are: the volume and composition of the column, ion channels, single cell electrical
behavior, morphology repair and cloning, synaptic properties, short- and long-term
plasticity, synaptic integration, polysynaptic loops, touch detection, structural
and functional connectivity and emergent phenomena. The result of the calibration
process is a score indicating the overall precision and quality of the fit. This system
provides a means to identify those areas which require additional biological data
as well as those areas where the model is biologically accurate or in need of refinement.
The calibration process will continue to develop, as further biological details become
known, and guide the refinement of the neocortical column model.